Characteristics and limitations of physical tribo-modelling in deep drawing of thin sheet metal

Abstract

The significance of contact friction in deep drawing is well-known, especially in manufacturing of auto body parts. The general approach in this area involves the recognition of the influence of the main tribological parameters – pressure, speed and temperature in the deep drawing process. The developed methods for physical modelling of tribological phenomena and the influence in deep drawing are very different. These methods basically have the appropriate physical model which imitates local area or a complete work piece in metal forming process. The indicators of models can be very different: the deformation forces or work, forming limit parameters, distribution of stress, strain or temperature, etc. This paper analyzes the classic and modern physical tribo-models in deep drawing, according to their characteristics and limitations.